Packing-ring for piston-rods.



G. R. BRYANT.

PACKING RING FOR PISTON RODS.

APPLICATION FILED 11.19, 1913.

1 72,306, Patented Sept. 2, 1913.

3mm UZamnceR.Bg ant.

'tmrlun s'ra'ras PATENT UFFTQE.

GLARANCE ROSS BRYANT, OF FORT WORTH, TEXAS.

PACKING-RING FOR PISTON-RODS.

To all whom it may concern:

Be it known that I, CLARANCE R. BRYANT, a citizen of the United States, residing at Fort Worth, in the county of Tarrant and State of Texas, have invented new and useful Improvements in Packing-Rings for Piston-Rods, of which the following is a specification.

The invention relates to packing rings for pistons and particularly to a ring Which may be conveniently and readily applied and which will when in place form an effective packing without inducing undue wear upon the cylinder.

The main object of the present invention is the provision of a packing ring made in sections, divided to provide open ring forms and arranged in break joint relation to insure continuity of the ring ,as a whole to revent leakage, the main ring member havmg its outer or bearing surface eccentric with relation to its inner or engaging surface to provide for equalization of the ring pressure within the cylinder.

.The inventionin its preferred form of details will be described in the following specification, reference being had particularly to the accompanying drawings, in whiel1:

Figure 1 is a plan of the improved packing ring. Fig. 2 is a vertical section. Fig. 3 is an edge view of the main ring. Fig. 4 is an edge view of the auxiliary ring.

Referring particularly to the aceompanying drawings, the packing ring which, as will be understood is to be constructed of any.appropriate material and in any size desired, includes essentially two members, a member 1 hereinafter termed the main ring member, and a member 2 hereinafter termed the auxiliary ring member.

The main ring member 1 comprises an annular body having its outer peripheral edge 3 eccentrically disposed with relation Specification of Letters Patent.

Application filed April 19, 1913. Serial No. 762,317.

Patented Sept. 2, 1913.

the body is divided at 5 to provide for the necessary expansion and contraction, the line of division being on an angularly related plane or of interfitting step formation. The body is formed with a channel (5 in a relatively outer edge thereof, said channel extending part way through the wall of. the body and having its bottom wall 7 concen tric with the outer edge of the body.

The auxiliary ring 2 comprises an annular member divided at 8, with any appropriate form of division line and of a size to snugly fit in the channel 6.

The rings in their associated position are arranged to break joint so as to form an unbroken bearing surface as is usual in this type of device.

The improved packing ring will equalize itself in the eylinderby reason of the eccentric relation of the bearin surface to the piston, and hence I am enaliled by this type of ring to use the same in high pressure cylinders without leakage.

It will be appreciated that the present invention is not specifically limited to forming the channel 6 in the center of the outer surface of the main ring, as said channel with equal eliiciency may be formed to one side or the other of the center, or otherwise provided.

What is claimed is A packing ring including interrupted ring members, one of said members being formed with a channel in its outer edge having the base wall thereof eccentric with relation to the inner bearing surface of the member, the other member fitting in said channel.

In testimony whereof I aflix my signature in presence of two witnesses.

. CLARANCE ROSS BRYANT.

Witnesses:

H. G. Evans, C. M. TEMPLETON.

to its inner peripheral edge 4. The wall of 

